Ultrafast Anisotropic Optical Response and Coherent Acoustic Phonon Generation in Polycrystalline BaTiO3-BiFeO3

Brenden A. Magill; Kyoung Duck Park; Yuan Zhou; Anuj Chopra; Deepam Maurya; Shashank Priya; Markus Raschke; Alexey Belyanin; Christopher J. Stanton; Giti A. Khodaparast

doi:10.1515/ehs-2015-0028

Ultrafast Anisotropic Optical Response and Coherent Acoustic Phonon Generation in Polycrystalline BaTiO₃-BiFeO₃

Brenden A. Magill
, Kyoung Duck Park
, Yuan Zhou
, Anuj Chopra
, Deepam Maurya
, Shashank Priya
, Markus Raschke
, Alexey Belyanin
, Christopher J. Stanton
, Giti A. Khodaparast

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We optically study the as-yet little explored multiferroic material, BaTiO3-BiFeO3 (BTO-BFO), that has demonstrated enhanced magnetic properties, a higher DC resistance in comparison to BFO, and improved magnetoelectric coupling. Our studies include: ultrafast time resolved differential reflection, optically induced birefringence, and second-harmonic nano-imaging of the ferroic order. We observe a strong sensitivity to pump/probe polarizations, photo-induced ferroelectric poling on a picosecond timescale, as well as the generation of photo-induced coherent acoustic phonons with a frequency of ∼11 GHz. The second-harmonic generation nano-imaging reveals disordered but distinct ferroelectric domain order, percolating even across grain boundaries in the poly-crystalline thin film.

Original language	English (US)
Pages (from-to)	229-236
Number of pages	8
Journal	Energy Harvesting and Systems
Volume	3
Issue number	3
DOIs	https://doi.org/10.1515/ehs-2015-0028
State	Published - 2016
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2016 by De Gruyter 2016.

Keywords

Acoustic Phonons
Multiferroics
Second Harmonic Generation
Time Resolved Spectroscopy

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10.1515/ehs-2015-0028

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@article{dbfe7c3ba289438592b84995ba195df7,

title = "Ultrafast Anisotropic Optical Response and Coherent Acoustic Phonon Generation in Polycrystalline BaTiO3-BiFeO3",

abstract = "We optically study the as-yet little explored multiferroic material, BaTiO3-BiFeO3 (BTO-BFO), that has demonstrated enhanced magnetic properties, a higher DC resistance in comparison to BFO, and improved magnetoelectric coupling. Our studies include: ultrafast time resolved differential reflection, optically induced birefringence, and second-harmonic nano-imaging of the ferroic order. We observe a strong sensitivity to pump/probe polarizations, photo-induced ferroelectric poling on a picosecond timescale, as well as the generation of photo-induced coherent acoustic phonons with a frequency of ∼11 GHz. The second-harmonic generation nano-imaging reveals disordered but distinct ferroelectric domain order, percolating even across grain boundaries in the poly-crystalline thin film.",

keywords = "Acoustic Phonons, Multiferroics, Second Harmonic Generation, Time Resolved Spectroscopy",

author = "Magill, \{Brenden A.\} and Park, \{Kyoung Duck\} and Yuan Zhou and Anuj Chopra and Deepam Maurya and Shashank Priya and Markus Raschke and Alexey Belyanin and Stanton, \{Christopher J.\} and Khodaparast, \{Giti A.\}",

note = "Publisher Copyright: {\textcopyright} 2016 by De Gruyter 2016.",

year = "2016",

doi = "10.1515/ehs-2015-0028",

language = "English (US)",

volume = "3",

pages = "229--236",

journal = "Energy Harvesting and Systems",

issn = "2329-8774",

publisher = "Walter de Gruyter GmbH",

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TY - JOUR

T1 - Ultrafast Anisotropic Optical Response and Coherent Acoustic Phonon Generation in Polycrystalline BaTiO3-BiFeO3

AU - Magill, Brenden A.

AU - Park, Kyoung Duck

AU - Zhou, Yuan

AU - Chopra, Anuj

AU - Maurya, Deepam

AU - Priya, Shashank

AU - Raschke, Markus

AU - Belyanin, Alexey

AU - Stanton, Christopher J.

AU - Khodaparast, Giti A.

PY - 2016

Y1 - 2016

N2 - We optically study the as-yet little explored multiferroic material, BaTiO3-BiFeO3 (BTO-BFO), that has demonstrated enhanced magnetic properties, a higher DC resistance in comparison to BFO, and improved magnetoelectric coupling. Our studies include: ultrafast time resolved differential reflection, optically induced birefringence, and second-harmonic nano-imaging of the ferroic order. We observe a strong sensitivity to pump/probe polarizations, photo-induced ferroelectric poling on a picosecond timescale, as well as the generation of photo-induced coherent acoustic phonons with a frequency of ∼11 GHz. The second-harmonic generation nano-imaging reveals disordered but distinct ferroelectric domain order, percolating even across grain boundaries in the poly-crystalline thin film.

AB - We optically study the as-yet little explored multiferroic material, BaTiO3-BiFeO3 (BTO-BFO), that has demonstrated enhanced magnetic properties, a higher DC resistance in comparison to BFO, and improved magnetoelectric coupling. Our studies include: ultrafast time resolved differential reflection, optically induced birefringence, and second-harmonic nano-imaging of the ferroic order. We observe a strong sensitivity to pump/probe polarizations, photo-induced ferroelectric poling on a picosecond timescale, as well as the generation of photo-induced coherent acoustic phonons with a frequency of ∼11 GHz. The second-harmonic generation nano-imaging reveals disordered but distinct ferroelectric domain order, percolating even across grain boundaries in the poly-crystalline thin film.

KW - Acoustic Phonons

KW - Multiferroics

KW - Second Harmonic Generation

KW - Time Resolved Spectroscopy

UR - https://www.scopus.com/pages/publications/85056143298

UR - https://www.scopus.com/pages/publications/85056143298#tab=citedBy

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DO - 10.1515/ehs-2015-0028

M3 - Article

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SN - 2329-8774

VL - 3

SP - 229

EP - 236

JO - Energy Harvesting and Systems

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